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Acta Parasitologica, Vol.44, No. 1, 1999, 63-67
Semenas Liliana (1), Brugni Norma (1), Ostrowski de Nunez Margarita (2) - Metacercariae of Echinostomatidae in Diplodon chilensis (Unionacea, Pelecypoda) and description of Echinoparyphium megacirrus sp. n. in Patagonia (Argentina).

(1) Laboratorio de Parasitologia, Universidad Nacional del Comahue, Unidad Postal Universidad, (8400) Bariloche; (2) Departamento de Ciencias Biologicas, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellon II, 1428 Buenos Aires, Argentina
ABSTRACT

Two types of metacercariae with 37 and 43 collar spines were obtained from Diplodon chilensis (Unionacea, Pelecypoda). They were fed to chicken and mice and mature adults with eggs were only obtained from the latter. These are described as a new species, Echinoparyphium megacirrus sp. n.


KEY WORDS: Echinostomatidae, Echinoparyphium megacirrus sp. n., metacercariae, experimental adults, Diplodon chilensis, Argentina
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